/**
  * {@inheritdoc}
  */
 public function buildForm(array $form, FormStateInterface $form_state, FilterFormat $filter_format = NULL)
 {
     // Add AJAX support.
     $form['#prefix'] = '<div id="video-embed-dialog-form">';
     $form['#suffix'] = '</div>';
     // Ensure relevant dialog libraries are attached.
     $form['#attached']['library'][] = 'editor/drupal.editor.dialog';
     // Simple URL field and submit button for video URL.
     $form['video_url'] = ['#type' => 'textfield', '#title' => $this->t('Video URL'), '#required' => TRUE, '#default_value' => $this->getUserInput($form_state, 'video_url')];
     // If no settings are found, use the defaults configured in the filter
     // formats interface.
     $settings = $this->getUserInput($form_state, 'settings');
     if (empty($settings) && ($editor = Editor::load($filter_format->id()))) {
         $editor_settings = $editor->getSettings();
         $plugin_settings = NestedArray::getValue($editor_settings, ['plugins', 'video_embed', 'defaults', 'children']);
         $settings = $plugin_settings ? $plugin_settings : [];
     }
     // Create a settings form from the existing video formatter.
     $form['settings'] = Video::mockInstance($settings)->settingsForm([], new FormState());
     $form['settings']['#type'] = 'fieldset';
     $form['settings']['#title'] = $this->t('Settings');
     $form['actions'] = ['#type' => 'actions'];
     $form['actions']['save_modal'] = ['#type' => 'submit', '#value' => $this->t('Save'), '#submit' => [], '#ajax' => ['callback' => '::ajaxSubmit', 'event' => 'click', 'wrapper' => 'video-embed-dialog-form']];
     return $form;
 }
 /**
  * {@inheritdoc}
  *
  * @param \Drupal\filter\Entity\FilterFormat $filter_format
  *   The filter format for which this dialog corresponds.
  */
 public function buildForm(array $form, FormStateInterface $form_state, FilterFormat $filter_format = NULL)
 {
     // This form is special, in that the default values do not come from the
     // server side, but from the client side, from a text editor. We must cache
     // this data in form state, because when the form is rebuilt, we will be
     // receiving values from the form, instead of the values from the text
     // editor. If we don't cache it, this data will be lost.
     if (isset($form_state->getUserInput()['editor_object'])) {
         // By convention, the data that the text editor sends to any dialog is in
         // the 'editor_object' key. And the image dialog for text editors expects
         // that data to be the attributes for an <img> element.
         $image_element = $form_state->getUserInput()['editor_object'];
         $form_state->set('image_element', $image_element);
         $form_state->setCached(TRUE);
     } else {
         // Retrieve the image element's attributes from form state.
         $image_element = $form_state->get('image_element') ?: [];
     }
     $form['#tree'] = TRUE;
     $form['#attached']['library'][] = 'editor/drupal.editor.dialog';
     $form['#prefix'] = '<div id="editor-image-dialog-form">';
     $form['#suffix'] = '</div>';
     $editor = editor_load($filter_format->id());
     // Construct strings to use in the upload validators.
     $image_upload = $editor->getImageUploadSettings();
     if (!empty($image_upload['dimensions'])) {
         $max_dimensions = $image_upload['dimensions']['max_width'] . '×' . $image_upload['dimensions']['max_height'];
     } else {
         $max_dimensions = 0;
     }
     $max_filesize = min(Bytes::toInt($image_upload['max_size']), file_upload_max_size());
     $existing_file = isset($image_element['data-entity-uuid']) ? \Drupal::entityManager()->loadEntityByUuid('file', $image_element['data-entity-uuid']) : NULL;
     $fid = $existing_file ? $existing_file->id() : NULL;
     $form['fid'] = array('#title' => $this->t('Image'), '#type' => 'managed_file', '#upload_location' => $image_upload['scheme'] . '://' . $image_upload['directory'], '#default_value' => $fid ? array($fid) : NULL, '#upload_validators' => array('file_validate_extensions' => array('gif png jpg jpeg'), 'file_validate_size' => array($max_filesize), 'file_validate_image_resolution' => array($max_dimensions)), '#required' => TRUE);
     $form['attributes']['src'] = array('#title' => $this->t('URL'), '#type' => 'textfield', '#default_value' => isset($image_element['src']) ? $image_element['src'] : '', '#maxlength' => 2048, '#required' => TRUE);
     // If the editor has image uploads enabled, show a managed_file form item,
     // otherwise show a (file URL) text form item.
     if ($image_upload['status']) {
         $form['attributes']['src']['#access'] = FALSE;
         $form['attributes']['src']['#required'] = FALSE;
     } else {
         $form['fid']['#access'] = FALSE;
         $form['fid']['#required'] = FALSE;
     }
     // The alt attribute is *required*, but we allow users to opt-in to empty
     // alt attributes for the very rare edge cases where that is valid by
     // specifying two double quotes as the alternative text in the dialog.
     // However, that *is* stored as an empty alt attribute, so if we're editing
     // an existing image (which means the src attribute is set) and its alt
     // attribute is empty, then we show that as two double quotes in the dialog.
     // @see https://www.drupal.org/node/2307647
     $alt = isset($image_element['alt']) ? $image_element['alt'] : '';
     if ($alt === '' && !empty($image_element['src'])) {
         $alt = '""';
     }
     $form['attributes']['alt'] = array('#title' => $this->t('Alternative text'), '#placeholder' => $this->t('Short description for the visually impaired'), '#type' => 'textfield', '#required' => TRUE, '#required_error' => $this->t('Alternative text is required.<br />(Only in rare cases should this be left empty. To create empty alternative text, enter <code>""</code> — two double quotes without any content).'), '#default_value' => $alt, '#maxlength' => 2048);
     // When Drupal core's filter_align is being used, the text editor may
     // offer the ability to change the alignment.
     if (isset($image_element['data-align']) && $filter_format->filters('filter_align')->status) {
         $form['align'] = array('#title' => $this->t('Align'), '#type' => 'radios', '#options' => array('none' => $this->t('None'), 'left' => $this->t('Left'), 'center' => $this->t('Center'), 'right' => $this->t('Right')), '#default_value' => $image_element['data-align'] === '' ? 'none' : $image_element['data-align'], '#wrapper_attributes' => array('class' => array('container-inline')), '#attributes' => array('class' => array('container-inline')), '#parents' => array('attributes', 'data-align'));
     }
     // When Drupal core's filter_caption is being used, the text editor may
     // offer the ability to in-place edit the image's caption: show a toggle.
     if (isset($image_element['hasCaption']) && $filter_format->filters('filter_caption')->status) {
         $form['caption'] = array('#title' => $this->t('Caption'), '#type' => 'checkbox', '#default_value' => $image_element['hasCaption'] === 'true', '#parents' => array('attributes', 'hasCaption'));
     }
     $form['actions'] = array('#type' => 'actions');
     $form['actions']['save_modal'] = array('#type' => 'submit', '#value' => $this->t('Save'), '#submit' => array(), '#ajax' => array('callback' => '::submitForm', 'event' => 'click'));
     return $form;
 }
  /**
   * {@inheritdoc}
   *
   * @param \Drupal\filter\Entity\FilterFormat $filter_format
   *   The filter format for which this dialog corresponds.
   */
  public function buildForm(array $form, FormStateInterface $form_state, FilterFormat $filter_format = NULL) {
    // This form is special, in that the default values do not come from the
    // server side, but from the client side, from a text editor. We must cache
    // this data in form state, because when the form is rebuilt, we will be
    // receiving values from the form, instead of the values from the text
    // editor. If we don't cache it, this data will be lost.
    if (isset($form_state->getUserInput()['editor_object'])) {
      // By convention, the data that the text editor sends to any dialog is in
      // the 'editor_object' key. And the image dialog for text editors expects
      // that data to be the attributes for an <img> element.
      $file_element = $form_state->getUserInput()['editor_object'];
      $form_state->set('file_element', $file_element);
      $form_state->setCached(TRUE);
    }
    else {
      // Retrieve the image element's attributes from form state.
      $file_element = $form_state->get('file_element') ?: [];
    }

    $form['#tree'] = TRUE;
    $form['#attached']['library'][] = 'editor/drupal.editor.dialog';
    $form['#prefix'] = '<div id="editor-file-dialog-form">';
    $form['#suffix'] = '</div>';


    // Load dialog settings.
    $editor = editor_load($filter_format->id());
    $file_upload = $editor->getThirdPartySettings('editor_file');
    $max_filesize = min(Bytes::toInt($file_upload['max_size']), file_upload_max_size());

    $existing_file = isset($file_element['data-entity-uuid']) ? \Drupal::entityManager()->loadEntityByUuid('file', $file_element['data-entity-uuid']) : NULL;
    $fid = $existing_file ? $existing_file->id() : NULL;

    $form['fid'] = array(
      '#title' => $this->t('File'),
      '#type' => 'managed_file',
      '#upload_location' => $file_upload['scheme'] . '://' . $file_upload['directory'],
      '#default_value' => $fid ? array($fid) : NULL,
      '#upload_validators' => array(
        'file_validate_extensions' => !empty($file_upload['extensions']) ? $file_upload['extensions'] : array('txt'),
        'file_validate_size' => array($max_filesize),
      ),
      '#required' => TRUE,
    );

    $form['attributes']['href'] = array(
      '#title' => $this->t('URL'),
      '#type' => 'textfield',
      '#default_value' => isset($file_element['href']) ? $file_element['href'] : '',
      '#maxlength' => 2048,
      '#required' => TRUE,
    );

    if ($file_upload['status']) {
      $form['attributes']['href']['#access'] = FALSE;
      $form['attributes']['href']['#required'] = FALSE;
    }
    else {
      $form['fid']['#access'] = FALSE;
      $form['fid']['#required'] = FALSE;
    }

    $form['actions'] = array(
      '#type' => 'actions',
    );
    $form['actions']['save_modal'] = array(
      '#type' => 'submit',
      '#value' => $this->t('Save'),
      // No regular submit-handler. This form only works via JavaScript.
      '#submit' => array(),
      '#ajax' => array(
        'callback' => '::submitForm',
        'event' => 'click',
      ),
    );

    return $form;
  }
  /**
   * {@inheritdoc}
   *
   * @param \Drupal\filter\Entity\FilterFormat $filter_format
   *   The filter format for which this dialog corresponds.
   */
  public function buildForm(array $form, FormStateInterface $form_state, FilterFormat $filter_format = NULL) {
    // The default values are set directly from \Drupal::request()->request,
    // provided by the editor plugin opening the dialog.
    $user_input = $form_state->getUserInput();
    $input = isset($user_input['editor_object']) ? $user_input['editor_object'] : [];

    /** @var \Drupal\editor\EditorInterface $editor */
    $editor = $this->editorStorage->load($filter_format->id());
    $linkit_profile_id = $editor->getSettings()['plugins']['linkit']['linkit_profile'];
    $this->linkitProfile = $this->linkitProfileStorage->load($linkit_profile_id);

    $form['#tree'] = TRUE;
    $form['#attached']['library'][] = 'editor/drupal.editor.dialog';
    $form['#prefix'] = '<div id="linkit-editor-dialog-form">';
    $form['#suffix'] = '</div>';

    // Everything under the "attributes" key is merged directly into the
    // generated link tag's attributes.
    $form['attributes']['href'] = [
      '#title' => $this->t('Link'),
      '#type' => 'linkit',
      '#default_value' => isset($input['href']) ? $input['href'] : '',
      '#description' => $this->t('Start typing to find content or paste a URL.'),
      '#autocomplete_route_name' => 'linkit.autocomplete',
      '#autocomplete_route_parameters' => [
        'linkit_profile_id' => $linkit_profile_id
      ],
      '#weight' => 0,
    ];

    $this->addAttributes($form, $form_state, $this->linkitProfile->getAttributes());

    $form['actions'] = [
      '#type' => 'actions',
    ];

    $form['actions']['save_modal'] = [
      '#type' => 'submit',
      '#value' => $this->t('Save'),
      '#submit' => [],
      '#ajax' => [
        'callback' => '::submitForm',
        'event' => 'click',
      ],
    ];

    return $form;
  }
 /**
  * {@inheritdoc}
  *
  * @param \Drupal\filter\Entity\FilterFormat $filter_format
  *   The filter format for which this dialog corresponds.
  */
 public function buildForm(array $form, FormStateInterface $form_state, FilterFormat $filter_format = NULL)
 {
     // This form is special, in that the default values do not come from the
     // server side, but from the client side, from a text editor. We must cache
     // this data in form state, because when the form is rebuilt, we will be
     // receiving values from the form, instead of the values from the text
     // editor. If we don't cache it, this data will be lost.
     $user_input = $form_state->getUserInput();
     if (isset($user_input['editor_object'])) {
         // By convention, the data that the text editor sends to any dialog is in
         // the 'editor_object' key. And the image dialog for text editors expects
         // that data to be the attributes for an <img> element.
         $image_element = $user_input['editor_object'];
         $form_state->set('image_element', $image_element);
         $form_state->setCached(TRUE);
     } elseif ($form_state->getTemporaryValue('wizard')) {
         $image_element = $form_state->getTemporaryValue('wizard')['image_element'];
     } else {
         // Retrieve the image element's attributes from form state.
         $image_element = $form_state->get('image_element') ?: [];
     }
     // Add libraries and wrap the form in ajax wrappers.
     $form['#tree'] = TRUE;
     $form['#attached']['library'][] = 'editor/drupal.editor.dialog';
     $form['#prefix'] = '<div id="' . self::AJAX_WRAPPER_ID . '">';
     $form['#suffix'] = '</div>';
     /** @var \Drupal\editor\Entity\Editor $editor */
     $editor = $this->entityTypeManager->getStorage('editor')->load($filter_format->id());
     // Construct strings to use in the upload validators.
     $embridge_image_settings = $editor->getSettings()['plugins']['embridgeimage']['embridge_image_upload'];
     $max_filesize = min(Bytes::toInt($embridge_image_settings['max_size']), file_upload_max_size());
     /** @var \Drupal\embridge\EmbridgeAssetEntityInterface $existing_asset */
     $existing_asset = isset($image_element['data-entity-uuid']) ? $this->entityRepository->loadEntityByUuid('embridge_asset_entity', $image_element['data-entity-uuid']) : NULL;
     $asset_id = $existing_asset ? $existing_asset->id() : NULL;
     /** @var \Drupal\embridge\EmbridgeCatalogInterface $catalog */
     $catalog = $this->entityTypeManager->getStorage('embridge_catalog')->load($embridge_image_settings['catalog_id']);
     // Create a preview image.
     $preview = FALSE;
     if (!empty($user_input['_triggering_element_name'])) {
         $triggering_element = $user_input['_triggering_element_name'];
     }
     // If we are editing an existing asset, use that thumbnail.
     if (empty($form_state->getValues()) && $existing_asset) {
         $preview = $this->assetHelper->getAssetConversionUrl($existing_asset, $catalog->getApplicationId(), 'thumb');
     } elseif (isset($triggering_element) && $triggering_element != 'asset_remove_button' && ($uploaded_id = $form_state->getValue(['asset', 0]))) {
         /** @var \Drupal\embridge\EmbridgeAssetEntityInterface $uploaded_asset */
         $uploaded_asset = $this->entityTypeManager->getStorage('embridge_asset_entity')->load($uploaded_id);
         if ($uploaded_asset) {
             $preview = $this->assetHelper->getAssetConversionUrl($uploaded_asset, $catalog->getApplicationId(), 'thumb');
         }
     }
     // Use a stock image for preview.
     if (!$preview) {
         $preview = drupal_get_path('module', 'embridge_ckeditor') . '/images/preview-image.png';
     }
     // TODO: Make this configurable.
     $allowed_extensions = 'gif png jpg jpeg';
     $url_options = ['filter_format' => $filter_format->id(), 'extensions' => $allowed_extensions, 'catalog_id' => $embridge_image_settings['catalog_id']];
     $link_url = Url::fromRoute('embridge_ckeditor.image.wizard', $url_options);
     $link_url->setOptions(['attributes' => ['class' => ['use-ajax', 'button'], 'data-accepts' => 'application/vnd.drupal-modal', 'data-dialog-type' => 'modal', 'data-dialog-options' => Json::encode(['width' => 1000])]]);
     $class = get_class($this);
     $form['asset'] = ['preview' => ['#theme' => 'image', '#uri' => $preview, '#weight' => -100], '#title' => $this->t('Image'), '#type' => 'embridge_asset', '#catalog_id' => $embridge_image_settings['catalog_id'], '#library_id' => $embridge_image_settings['library_id'], '#upload_location' => 'public://' . $embridge_image_settings['directory'], '#default_value' => $asset_id ? [$asset_id] : NULL, '#upload_validators' => ['validateFileExtensions' => [$allowed_extensions], 'validateFileSize' => [$max_filesize]], '#pre_render' => [[$class, 'preRenderAssetElement']], '#allow_search' => FALSE, '#required' => TRUE, 'search_link' => Link::fromTextAndUrl('Search asset library', $link_url)->toRenderable()];
     $form['asset']['search_link']['#weight'] = 100;
     $form['attributes'] = ['#type' => 'container', '#tree' => TRUE, '#attributes' => ['class' => ['image-attributes']]];
     $form['attributes']['src'] = ['#type' => 'value'];
     $alt = isset($image_element['alt']) ? $image_element['alt'] : '';
     $form['attributes']['alt'] = ['#title' => $this->t('Alternative text'), '#description' => $this->t('The alt text describes the image for non-sighted users. <br/>The alt text can remain empty only if the image conveys no meaning (is decorative only).'), '#type' => 'textfield', '#default_value' => $alt, '#maxlength' => 2048];
     $conversion = isset($image_element['data-conversion']) ? $image_element['data-conversion'] : '';
     $conversions_array = $catalog->getConversionsArray();
     $form['attributes']['data-conversion'] = ['#title' => $this->t('Image size'), '#description' => $this->t('Choose the image size conversion to display.'), '#type' => 'select', '#default_value' => $conversion, '#options' => array_combine($conversions_array, $conversions_array)];
     // When Drupal core's filter_align is being used, the text editor may
     // offer the ability to change the alignment.
     if ($filter_format->filters('filter_align')->status) {
         $data_align = !empty($image_element['data-align']) ? $image_element['data-align'] : '';
         $form['attributes']['data-align'] = ['#title' => $this->t('Align'), '#description' => $this->t('How the image will align within the content.'), '#type' => 'select', '#options' => ['none' => $this->t('None'), 'left' => $this->t('Left'), 'center' => $this->t('Center'), 'right' => $this->t('Right')], '#default_value' => $data_align];
     }
     $form['actions'] = ['#type' => 'actions'];
     $form['actions']['save_modal'] = ['#type' => 'submit', '#value' => $this->t('Save'), '#submit' => [], '#ajax' => ['callback' => [$this, 'ajaxSave'], 'event' => 'click'], '#attributes' => ['class' => ['button--primary']]];
     return $form;
 }